Snap-together Sphere
Description
The dimensions of the rings in the provided stl files are 60mm outer diameter, 20mm height and 3mm thickness. They have been generated with one face at every 2mm of the perimeter and also, a gap of 0.4mm in the slots which gave a nice fit for the rings printed by bot1334.
The zip file contains two more examples (40mm diameter, 5mm and 10mm height and, if I'm not wrong, 2mm thickness) however, I was not using any "gap" parameter for those so... they'll need some cleaning to fit properly.
Some more pics: flickr.com/photos/aubenc/sets/72157627518857918/
UPDATE:
Replaced the OpenSCAD file with v2 version which includes a production plate for the 3 rings in one build.
(I find the multiple colors a much nicer option though...)
Also added:
- A set for three rings that should fit in a Cupcake, their diameter is 48mm, height 16mm (thickness and gap same as above) and they are distanced 2mm.
- Another set for larger build envelopes with huge dimensions (180x60x4dot5.zip)
I have NOT printed those, hope they work fine, good luck if you try them!
BTW, feedback (and picture too) for the big set is highly welcome !!! specially if it doesn't work so no one else will waste time, plastic, energy... trying it out !!!
Instructions
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I'm experimenting with nesting these now, the stl files here and 45mm dia/10mm height. Rattles nicely :)
Why do you nest them? (just out of curiosity because I have never being playing with PLA)
May be you do it to allow the layers to cool down... hmmmm... I will add (hopefully today) an STL with the 3 rings together which should also do the trick (if that's the reason)
Brilliant, even on my poorly calibrated machine it snapped straight together. Thanks :)
Great work!
This print required zero cleanup and snapped together extremely easily. Props for a great design...
I put a bell inside mine, and it makes a great little toy
I love it when a print just goes together. Nice tight fit with all parts. Nice thinking on the tolerances. No cleaning straight together off the printer!
It snapped together real well. Very little cleaning along the edge that sits on the heated plate.
More from aubenc
Scaled this up 3x in netfabb Studio Basic. Do not try to scale it in SF/SFACT, it's not "real" scaling, and does something funny resulting in a pile of loosely stacked filament. Printed with Ultimachine PLA, SFACT master branch, 200 mm/s fill, 100 mm/s perimeter, 0.1 fill ratio with Grid Hexagonal fill, experimental Skin feature enabled. Took a little flexing to get them to fit together; I don't know if it could have been done if they were more solidly filled.
FYI: Skeinforge scaling is after it sliced the model, so if you scale 3x with SF, you need to reduce your layer thickness to 1/3. You're better off not using it.
Yep, that's the risk of scaling, everything gets bigger (or smaller) and thus issues may appear: walls too thick... gaps that end up with a too loose (or tight) fit... more material and printing time needed...
Thanks for the feedback!